Eliminating the audible 'buzz' in GSM phones

Holland, Nick; Score, Mike
July 2005
Portable Design;Jul2005, Vol. 11 Issue 7, p18
This article focuses on eliminating the audible buzz in global system mobile phones. Cellular phone PCB are much more complex and internally noisy than ever before, due to added functionality and less board space. In many cases, the speaker is very close to the RF antenna, and the audio amplifier is closer to the RF power-amplifier section. This means that the components on the board have to deal with higher levels of RF noise than in previous generations. In many cases, this noise causes RF rectification in the audio amplifier, which results in buzzing or clicking in the speaker.


Related Articles

  • Roaming becomes a critical difference. Tanner, John C. // America's Network;10/1/2004, Vol. 108 Issue 15, p14 

    Telephone operators are realizing they cannot rely on plain mobile voice roaming to ensure revenue potential. This article examines how global systems for mobile communications wireless providers try to exploit profit through cooperation. Operators are employing value-adds such as promotional...

  • Geek cornflakes.  // APC (Bauer Media Group);Jan2006, Vol. 26 Issue 1, p136 

    The article reports that Vodafone Group PLC pulled out the pearler of a stat to support its 3G mobile network launch. 94% of Australians strongly agree that the simple things in life are often the best. There's no word as yet on whether Vodafone will re-do the survey to lake into account the...

  • UK GSM traffic reaches 2bn level for February.  // New Media Age;4/1/2004, p13 

    This article presents British figures from the Mobile Data Association (MDA) as of April 2004. According to the research conducted by the MDA, over 2 billion text messages were sent over British global system for mobile communication (GSM) networks in February 2004. The findings allegedly...

  • Base Station Subsystem.  // Network Dictionary;2007, p60 

    A dictionary entry for the Base Station Subsystem (BSS) is presented. The BSS is the section of a GSM network which is responsible for handling traffic and signaling between a mobile phone and the Network Switching Subsystem. It carries out transcoding of speech channels, allocation of radio...

  • Push to Talk struggles with standards. Tanner, John C. // America's Network;3/1/2005, Vol. 109 Issue 3, p30 

    This article examines the issue of standardization for push-to-talk mobile applications. Push-to-talk is the ability to essentially turn a mobile telephone into a walkie-talkie by giving it trunked radio functionality. A discussion is presented on how general packet radio service (GPRS)...

  • Hotter than a Vindaloo. Puliyenthuruthel, Josey // Total Telecom Magazine;Oct2003, p25 

    Discusses the controversy regarding the move of the Telecoms Regulatory Authority of India (TRAI) to open to public debate its paper on Unified Licencing for Basic and Cellular Services. Supporters of the proposal; Reaction of global system for mobile communications operators to the proposal;...

  • INSIGHT.  // Wireless Asia;Dec2004, Vol. 7 Issue 10, p7 

    Reports on developments in the wireless communication industry as of December 2004. Expected increase in sales of smartphones; Need for the global system for mobile communications to have location-based services in their strategic plan by 2005 to compete more with other providers; Increase in...

  • Profit in a low-ARPU climate. Wieland, Ken // Telecommunications - International Edition;Apr2005, Vol. 39 Issue 4, p16 

    Focuses on the impact of global system for mobile communications companies on the economy of low-average revenue per unit countries. Ways by which mobile networks might help stimulate emerging market economies; Problems related to the high cost of cellular telephone handsets; Account on the...

  • No fixed abode. Rubenstein, Roy // Total Telecom Magazine;Feb2006, p12 

    The article reports on the threats posed by the fixed-mobile convergence sector to mobile operators from around the world in February 2006. Mobile operators have been slow to react to fixed operators' services that offer cheaper calls in a homezone. Hence, new moves are being led by fixed...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics